| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated | 
| Major Depressive Disorders |  | 
| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| 
| E.1.2 | Version | 6.1 |  
| E.1.2 | Level | PT |  
| E.1.2 | Classification code | 10057840 |  | 
| E.1.3 | Condition being studied is a rare disease | No | 
| E.2 Objective of the trial | 
| E.2.1 | Main objective of the trial | 
| to evaluate the efficacy and safety and tolerability of two fixed dosages of Lu AA21004  5 and 10mg/day   versus placebo after 6 weeks of treatment in patients with Major Depressive Disorder  MDD . |  | 
| E.2.2 | Secondary objectives of the trial | 
| to evaluate the efficacy of Lu AA21004  5 and 10mg/day  compared to placebo after 1 week of treatment - to evaluate the safety and tolerability of Lu AA21004  5 and 10mg/day  compared to placebo during the  course of the study - to evaluate the efficacy of Lu AA21004  5 and 10mg/day  compared to placebo during the 6-week, doubleblind  treatment period - to evaluate the proportion of patients who respond to Lu AA21004 treatment at Week 6 compared to placebo - to evaluate the proportion of patients who are in sustained response after 1 week of treatment with Lu AA21004 compared to placebo; to evaluate the proportion of patients who are in remission after 6 weeks of treatment with Lu AA21004 as  compared to placebo |  | 
| E.2.3 | Trial contains a sub-study | Information not present in EudraCT | 
| E.3 | Principal inclusion criteria | 
| 1. The patient is able to read and understand the Subject Information Sheet.  2. The patient has signed the Informed Consent Form. No study-related procedures may be  performed before the patient has signed the form.  3. The patient suffers from a major depressive episode  MDE  as primary diagnosis  according to DSM-IV-TR criteria  classification code 296.xx .  4. The reported duration of the current Major Depressive Episode is at least 3 months and  less than 12 months at screening.  5. The patient has a MADRS total score   30.  6. The patient is an outpatient, man or woman, aged between 18 and 65 years  extremes  included .  7. The patient, if female, must   -agree not to try to become pregnant during the study, AND  -use adequate contraception  adequate contraception is defined as oral/systemic  contraception, intrauterine device, diaphragm in combination with spermicide, or  condom for male partner in combination with spermicide , OR  -have had her last natural menstruation at least 24 months prior to screening, OR -have been surgically sterilised prior to screening, OR  -have had a hysterectomy prior to screening, OR  -not be sexually active |  | 
| E.4 | Principal exclusion criteria | 
| 1. The patient has one or more of the following conditions   -Any current psychiatric disorder other than MDD as defined in the DSM-IV-TR   assessed with the MINI  - Current or past history of  manic or hypomanic episode, schizophrenia or any other  psychotic disorder, including major depression with psychotic features, mental  retardation, organic mental disorders, or mental disorders due to a general medical  condition as defined in the DSM-IV-TR. -Any substance disorder  except nicotine and caffeine  within the previous 6 months as  defined in the DSM-IV-TR.  - Presence or history of a clinically significant neurological disorder  including epilepsy .  - Neurodegenerative disorder  Alzheimer s disease, Parkinson s disease, multiple  sclerosis, Huntington s disease, etc.  -Any axis II disorder that might compromise the study.  2. The patient has a significant risk of suicide according to investigator s opinion or presents  a score   5 on item 10  suicidal thoughts  of the MADRS.  3. The patient has a history of lack of response to previous treatment with venlafaxine.  4. The current depressive symptoms of the patient are considered by the investigator to have  been resistant to two adequate antidepressant treatments of at least 6 weeks duration.  5. The patient has a history of severe drug allergy or hypersensitivity, or known  hypersensitivity to venlafaxine.  6. The patient has used/uses disallowed recent or concomitant medication  specified in  Appendix II, Recent and Concomitant Medication , or it is anticipated that the patient  will require treatment with at least one of the disallowed concomitant medications during  the study.  7. The patient has received electroconvulsive therapy within 6 months prior to screening.  8. The patient is currently receiving formal cognitive or behavioural therapy, systematic  psychotherapy, or plans to initiate such therapy during the study.  9. The patient has a clinically significant unstable illness, for example, hepatic or renal  insufficiency, or a cardiovascular, pulmonary, gastrointestinal, endocrine, neurological,  infectious, neoplastic, skin and subcutaneous tissue disorders or metabolic disturbance.  10. The patient suffers from and/or is under treatment for hypertension  11. The patient has clinically significant abnormal vital signs.  12. The patient has one or more laboratory values outside the normal range, based on the  blood or urine samples taken at the Screening Visit, that are considered by the  investigator to be clinically significant.  13. The patient has a clinically significant abnormal ECG.  14. The patient has a disease or takes medication that, in the opinion of the investigator,  could interfere with the assessments of safety, tolerability or efficacy.  15. The patient has been treated with any investigational medicinal product within 30 days  5 half lives  whichever is longer  prior to screening.  16. The patient is pregnant or breast-feeding.  17. The patient, in the opinion of the investigator, is unlikely to comply with the clinical  study protocol or is unsuitable for any reason.  18. The patient is a member of the site personnel or their immediate families.  19. The patient is under forced treatment.  20. The patient has previously participated in this study.  21. The patient has previously been exposed to Lu AA21004. |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Main endpoints of interest are MADRS total score at week 6, MADRS total score at week 1, and response rates at week 1. Also, MADRS total scores, HAM-D-24, HAM-A, CGI-S, CGI-I, SCL-90-R, SF-36, EuroQol and MADRS IVR version will be analysed at all time points.  In addition safety is also an endpoint as measured by vital signs, ECGs, laboratory measurements, weight, physical examination, adverse events and withdrawal rates |  | 
| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis | No | 
| E.6.2 | Prophylaxis | No | 
| E.6.3 | Therapy | No | 
| E.6.4 | Safety | Yes | 
| E.6.5 | Efficacy | Yes | 
| E.6.6 | Pharmacokinetic | Yes | 
| E.6.7 | Pharmacodynamic | Yes | 
| E.6.8 | Bioequivalence | Information not present in EudraCT | 
| E.6.9 | Dose response | No | 
| E.6.10 | Pharmacogenetic | Information not present in EudraCT | 
| E.6.11 | Pharmacogenomic | No | 
| E.6.12 | Pharmacoeconomic | Yes | 
| E.6.13 | Others | Information not present in EudraCT | 
| E.7 | Trial type and phase | 
| E.7.1 | Human pharmacology (Phase I) | No | 
| E.7.1.1 | First administration to humans | No | 
| E.7.1.2 | Bioequivalence study | No | 
| E.7.1.3 | Other | No | 
| E.7.1.3.1 | Other trial type description |  | 
| E.7.2 | Therapeutic exploratory (Phase II) | Yes | 
| E.7.3 | Therapeutic confirmatory (Phase III) | No | 
| E.7.4 | Therapeutic use (Phase IV) | No | 
| E.8 Design of the trial | 
| E.8.1 | Controlled | Yes | 
| E.8.1.1 | Randomised | Yes | 
| E.8.1.2 | Open | No | 
| E.8.1.3 | Single blind | No | 
| E.8.1.4 | Double blind | Yes | 
| E.8.1.5 | Parallel group | Yes | 
| E.8.1.6 | Cross over | No | 
| E.8.1.7 | Other | No | 
| E.8.2 | Comparator of controlled trial | 
| E.8.2.1 | Other medicinal product(s) | No | 
| E.8.2.2 | Placebo | Yes | 
| E.8.2.3 | Other | Yes | 
| E.8.2.3.1 | Comparator description | 
| farmaco attivo di riferimento |  | 
| E.8.3 | The trial involves single site in the Member State concerned | No | 
| E.8.4 | The trial involves multiple sites in the Member State concerned | Yes | 
| E.8.5 | The trial involves multiple Member States | Yes | 
| E.8.6 Trial involving sites outside the EEA | 
| E.8.6.1 | Trial being conducted both within and outside the EEA | Yes | 
| E.8.6.2 | Trial being conducted completely outside of the EEA | Information not present in EudraCT | 
| E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |  | 
| E.8.7 | Trial has a data monitoring committee | Information not present in EudraCT | 
| E.8.8 | Definition of the end of the trial and justification where it is not the last
                        visit of the last subject undergoing the trial |  | 
| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 1 | 
| E.8.9.1 | In the Member State concerned months | 0 | 
| E.8.9.1 | In the Member State concerned days |  | 
| E.8.9.2 | In all countries concerned by the trial years | 1 | 
| E.8.9.2 | In all countries concerned by the trial months | 0 |